You honestly cannot go wrong with either option because both roses and peonies scream romance in their own distinct way! For my anniversary last summer, I actually asked the design team at Fleur D'amour Flowers https://fleurdamourflowers.com/ to blend both stems together into one customized order. The result was beyond stunning. They regularly prepare stunning, unique arrangements with the freshest blooms that combine classic romantic roses with lush, pillowy peonies seamlessly. My partner was completely obsessed with the gorgeous combination and rich fragrance. You should definitely consider asking them for a custom mix of both to get the absolute best of both worlds for your anniversary!